Add a recenter control for Wiimote IR relative input

This adds a recenter control binding which allows recentering the
cursor when relative input is enabled.

(EnableSettingControl is renamed to avoid confusions.)

Source/Core/DolphinWX/InputConfigDiag.cpp

@@ -167,8 +167,10 @@ ControlDialog::ControlDialog(GamepadPage* const parent, InputConfig& config,
 
 ControlButton::ControlButton(wxWindow* const parent,
                              ControllerInterface::ControlReference* const _ref,
-                             const unsigned int width, const std::string& label)
+                             const std::string& name, const unsigned int width,
-    : wxButton(parent, wxID_ANY, "", wxDefaultPosition, wxSize(width, 20)), control_reference(_ref)
+                             const std::string& label)
+    : wxButton(parent, wxID_ANY, "", wxDefaultPosition, wxSize(width, 20)), control_reference(_ref),
+      m_name(name)
 {
   if (label.empty())
     SetLabel(StrToWxStr(_ref->expression));
@@ -457,8 +459,8 @@ void ControlDialog::AppendControl(wxCommandEvent& event)
   UpdateGUI();
 }
 
-void GamepadPage::EnableSettingControl(const std::string& group_name, const std::string& name,
+void GamepadPage::EnablePadSetting(const std::string& group_name, const std::string& name,
-                                       const bool enabled)
+                                   const bool enabled)
 {
   const auto box_iterator =
       std::find_if(control_groups.begin(), control_groups.end(), [&group_name](const auto& box) {
@@ -477,6 +479,25 @@ void GamepadPage::EnableSettingControl(const std::string& group_name, const std:
   (*it)->wxcontrol->Enable(enabled);
 }
 
+void GamepadPage::EnableControlButton(const std::string& group_name, const std::string& name,
+                                      const bool enabled)
+{
+  const auto box_iterator =
+      std::find_if(control_groups.begin(), control_groups.end(), [&group_name](const auto& box) {
+        return group_name == box->control_group->name;
+      });
+  if (box_iterator == control_groups.end())
+    return;
+
+  const auto* box = *box_iterator;
+  const auto it =
+      std::find_if(box->control_buttons.begin(), box->control_buttons.end(),
+                   [&name](const auto& control_button) { return control_button->m_name == name; });
+  if (it == box->control_buttons.end())
+    return;
+  (*it)->Enable(enabled);
+}
+
 void GamepadPage::AdjustSetting(wxCommandEvent& event)
 {
   const auto* const control = static_cast<wxControl*>(event.GetEventObject());
@@ -497,7 +518,8 @@ void GamepadPage::AdjustBooleanSetting(wxCommandEvent& event)
   }
   else if (control->GetLabelText() == "Relative Input")
   {
-    EnableSettingControl("IR", "Dead Zone", pad_setting->setting->GetValue());
+    EnablePadSetting("IR", "Dead Zone", pad_setting->setting->GetValue());
+    EnableControlButton("IR", "Recenter", pad_setting->setting->GetValue());
   }
 }
 
@@ -825,7 +847,8 @@ ControlGroupBox::ControlGroupBox(ControllerEmu::ControlGroup* const group, wxWin
     wxStaticText* const label =
         new wxStaticText(parent, wxID_ANY, wxGetTranslation(StrToWxStr(control->name)));
 
-    ControlButton* const control_button = new ControlButton(parent, control->control_ref.get(), 80);
+    ControlButton* const control_button =
+        new ControlButton(parent, control->control_ref.get(), control->name, 80);
     control_button->SetFont(m_SmallFont);
 
     control_buttons.push_back(control_button);

Source/Core/DolphinWX/InputConfigDiag.h

@@ -165,9 +165,10 @@ class ControlButton : public wxButton
 {
 public:
   ControlButton(wxWindow* const parent, ControllerInterface::ControlReference* const _ref,
-                const unsigned int width, const std::string& label = "");
+                const std::string& name, const unsigned int width, const std::string& label = "");
 
   ControllerInterface::ControlReference* const control_reference;
+  const std::string m_name;
 };
 
 class ControlGroupBox : public wxBoxSizer
@@ -223,7 +224,8 @@ public:
   void LoadDefaults(wxCommandEvent& event);
 
   void AdjustControlOption(wxCommandEvent& event);
-  void EnableSettingControl(const std::string& group_name, const std::string& name, bool enabled);
+  void EnablePadSetting(const std::string& group_name, const std::string& name, bool enabled);
+  void EnableControlButton(const std::string& group_name, const std::string& name, bool enabled);
   void AdjustSetting(wxCommandEvent& event);
   void AdjustBooleanSetting(wxCommandEvent& event);
 

Source/Core/InputCommon/ControllerEmu.cpp

@@ -295,6 +295,7 @@ ControllerEmu::Cursor::Cursor(const std::string& _name)
   controls.emplace_back(std::make_unique<Input>("Forward"));
   controls.emplace_back(std::make_unique<Input>("Backward"));
   controls.emplace_back(std::make_unique<Input>(_trans("Hide")));
+  controls.emplace_back(std::make_unique<Input>("Recenter"));
 
   numeric_settings.emplace_back(std::make_unique<NumericSetting>(_trans("Center"), 0.5));
   numeric_settings.emplace_back(std::make_unique<NumericSetting>(_trans("Width"), 0.5));

Source/Core/InputCommon/ControllerEmu.h

@@ -434,6 +434,13 @@ public:
             m_x = MathUtil::Clamp(m_x + xx * SPEED_MULTIPLIER, -1.0, 1.0);
           if (std::abs(yy) > deadzone)
             m_y = MathUtil::Clamp(m_y + yy * SPEED_MULTIPLIER, -1.0, 1.0);
+
+          // recenter
+          if (controls[7]->control_ref->State() > 0.5)
+          {
+            m_x = 0.0;
+            m_y = 0.0;
+          }
         }
         else
         {